ORFS Male x ORFS Male x BSP Parallel Male Branch Tee

Two ORFS male ports in line with a BSP parallel male on the branch. Tees a BSPP take-off into an ORFS run, which is the usual way a gauge or pilot line is picked up on a late-model machine.

Brand: Ayrtec – mild steel body with a plated finish, manufactured to the standards listed below.

Watch: Exploring Hydraulic Adaptors Part 1: Difference Between Branch Tee & Run Tee, Elbows Short and Long

Thread Standards

• ORFS Male – SAE J1453 O-ring face seal. It seals on an O-ring sitting in the flat face groove, never on the thread.
• BSP Parallel Male – BSPP to ISO 228. It seals on a bonded washer against the port face or on a 60° cone, never on the thread itself.

How to Choose

• On a branch tee the two in-line ports carry the main flow and the third port comes off the side at 90°. Get that the wrong way round and the tee physically will not fit the run.
• The two ORFS ports seal on O-rings in the mating flat faces. The BSPP branch needs a bonded washer or a cone seat.
• Three joints on one part, so three seals to get right. Check all three before you fit it.

Technicians Advice

A tee is three chances to leak in one fitting, and the one you cannot see is the one that goes. Assemble it on the bench where you can get at all three ports properly, then fit the whole thing to the machine.

Where You’ll Find It

• ORFS Male – High-pressure, high-vibration circuits on late-model excavators, drill rigs, crushers and forestry gear.
• BSP Parallel Male – Valve and manifold ports on Australian, British and Asian-built equipment, and most locally made hose ends. The default port thread on Australian truck and agricultural hydraulics.

Cross-Reference

• ORFS Male – SAE J1453 / ISO 8434-3 O-ring face seal. Parker call this series Seal-Lok. Also written ORFS or flat face.
• BSP Parallel Male – BSPP to ISO 228 / BS 2779, written G. Also called BSP parallel or gas thread.

Parker, Gates, Aeroquip and Ryco all manufacture to these same standards under their own part numbering, so a fitting built to the standard above will mate with theirs.

Cross-references are given at series level as a guide to the standard, not as a part-for-part substitution. Always confirm the thread form, size and seal type against the port before ordering.

📐Dimensions & thread sizes – every size in this range

← Swipe the table sideways to see every measurement →

Part code	A	B	H	S1	C	Material	Finish
BPM-ORM-ORM-040909	9/16" ORFS	1/4" BSPP	19mm	14.3mm	9/16" ORFS	Mild steel	Plated finish
BPM-ORM-ORM-041111	11/16" ORFS	1/4" BSPP	19mm	19.1mm	11/16" ORFS	Mild steel	Plated finish
BPM-ORM-ORM-061111	11/16" ORFS	3/8" BSPP	22mm	19.1mm	11/16" ORFS	Mild steel	Plated finish
BPM-ORM-ORM-061313	13/16" ORFS	3/8" BSPP	22mm	22.2mm	13/16" ORFS	Mild steel	Plated finish
BPM-ORM-ORM-081313	13/16" ORFS	1/2" BSPP	27mm	22.2mm	13/16" ORFS	Mild steel	Plated finish
BPM-ORM-ORM-081616	1" ORFS	1/2" BSPP	27mm	27.0mm	1" ORFS	Mild steel	Plated finish
BPM-ORM-ORM-121616	1" ORFS	3/4" BSPP	32mm	27.0mm	1" ORFS	Mild steel	Plated finish
BPM-ORM-ORM-121919	1.3/16" ORFS	3/4" BSPP	32mm	31.2mm	1.3/16" ORFS	Mild steel	Plated finish
BPM-ORM-ORM-162323	1.7/16" ORFS	1" BSPP	41mm	36.5mm	1.7/16" ORFS	Mild steel	Plated finish

Key: H centre to face, S1 hex across flats 2, C across corners. Measurements in millimetres unless shown otherwise. Thread columns show what each end mates with. Dimensions are nominal – check critical clearances against the part.

Downloads

📄 Thread Identification Chart (PDF)

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